Polyester

Background

38mm Mineral Water Cap Folding Slitting Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Automatic Cap Slitting Folding Machine. In this reaction,Bottle Cap Slitting Folding Machine.28MM Pet Preform Mould.

Polyester is used in the manufacture of many products, including clothing, home furnishings,48MM Pet Preform Mould, computer and recording tapes, and electrical insulation.30/25 PP Preform Mould. It does not absorb moisture, but does absorb oil;Cap Assembly Machine For Add Foam Liner-, soil-, and fire-Cap Assembly Machine For Add Washers. Its low absorbency also makes it naturally resistant to stains.Flip Top Cap Assembly Machine,Push Pull Cap Assembly Machine.Sport Cap Assembly Machine, and not damaged by mildew.Press Cap Assembly Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Plastic Cap Assembly Machine-based E.I. du Pont de Nemours and Co.Bottle Cap Assembly Machine. This early research, headed by W.H. Carothers,Mineral Water Cap Slitting Machine, the first synthetic fiber. Soon after, in the years 1939-41, British research chemists took interest in the du Pont studies and conducted their own research in the laboratories of Calico Printers Association, Ltd. This work resulted in the creation of the polyester fiber known in England as Terylene.

In 1946,Medicine Cap Cutting Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.28mm Plastic Cap Slitting Machine,Bottle Cap Cutting Machine. Today, there are two primary types of polyester, PET (polyethylene terephthalate) and PCDT (poly-1, 4-cyclohexylene-dimethylene terephthalate). PET, the more popular type, is applicable to a wider variety of uses.Plastic Cap Printing Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Bottle Cap Printing Machine.

Raw Materials

Polyester is a chemical term which can be broken intopoly,meaning many, andester,a basic organic chemical compound. The principle ingredient used in the manufacture of polyester is ethylene,Automatic Cap Lining Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Auto Cap Lining Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Bottle Cap Lining Machine. The four basic forms are filament,Vibration Massage Gun, tow, and fiberfill. In the filament form,Fascia Massage Gun, producing smooth-Handheld Massage Gun.Foot Massager Spa Machine, filaments are cut to short,Kneading Foot Massager.Electric Hand Massager Tool. Tow is a form in which continuous filaments are drawn loosely together. Fiberfill is the voluminous form used in the manufacture of quilts, pillows, and outerwear.Neck Massager.

Manufacturing Filament Yarn

Polymerization

• 1 To form polyester, dimethyl terephthalate is first reacted with ethylene glycol in the presence of a catalyst at a temperature of 302-410°F (150-210°C).
• 2 The resulting chemical, a monomer (single, non-repeating molecule) alcohol, is combined with terephthalic acid and raised to a temperature of 472°F (280°C). Newly-Air Pressure Eye Massager,Electric Eye Massager, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Eye Massager With Heat. The material is cut into tiny chips and completely dried to prevent irregularities in consistency.

Melt spinning

• 4 Polymer chips are melted at 500-518°F (260-270°C) to form a syrup-like solution.Eye Massager For Dry Eyes, which are usually round,Professional 4D Massage Chair. The number of holes in the spinneret determines the size of the yarn,4D Massage Chair With Footrest.
• 5 At the spinning stage, other chemicals may be added to the solution to make the resulting material flame retardant, antistatic, or easier to dye.

Drawing the fiber

• 6 When polyester emerges from the spinneret,4D Electric Massage Chair. The stretching forces the random polyester molecules to align in a parallel formation. This increases the strength, tenacity, and resilience of the fiber. This time, when the filaments dry,Shiatsu 4D Massage Chair.
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Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

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Pu Leather 3D Massage Chair, polymerization, drying, and melt spinning (steps 1-4 above) are much the same as in the manufacture of filament yarn. However, in the melt spinning process,3D Back Massage Chair. The rope-3D Massage Chair Mechanism.

Drawing tow

• 1 Newly-3D Office Massage Chair.Vibrating 3D Massage Chair.

Crimping

• 2 Drawn tow is then fed into compression boxes,Reflexology 3D massage chair, at a rate of 9-15 crimps per inch (3-6 per cm).Air Pressure 3D Massage Chair.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)3D L Track Massage Chair.3D Airbag Massage Chair.

Cutting

• 4 Following heat setting,Calf Kneading 3D Massage Chair. Polyester that will be blended with cotton is cut in 1.25-1.50 inch (3.2-3.8 cm) pieces; for rayon blends, 2 inch (5 cm)Percussion 3D Massage Chair.3D Full Body Massage Chair, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Zero Storage 3D Massage Chair.

The Future

3D Massage Chair,Full Body 2D Massage Chair's fastest-growing fiber.S Track 2D Massage Chair. However, polyester has suffered an "image problem" since that time, and clothes made out of polyester were often devalued and even ridiculed. Several new forms of polyester introduced in the early 1990s may help revitalize the image of polyester. A new form of polyester fiber,Intelligent Cloud 2D Massage Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,2D Mechanism Massage Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Zero Gravity 2D Massage Chair, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.